Diagnostic instrument



' Nov. 27, 1928.

W. J. CAMERON DIAGNOSTIC INSTRUMENT Filed Jan. 12, 1927 4/06 (0/ Wu. L u. CA MERON Patented Nov. 27, 1928.

P I TP or.

ILL J;- CAMERON, or cnrcaeo; LLInorsQ.

DIAGNOSTIC INSTRUMENE Application filed January'12; 192 7.- SerialaNo. 160635 My present invention relates to: an instrumentfor use in making examination and diagnosis, and has particularrreference to-a structurethat may-be readily-inserted into a cavity, such as nasal and oral. cavities, whereby aninspectiorrmay be hadof the membrane and tissue upon the interior :of the cavity.

"With the present instrument,: the interior of the cavity .maya be illuminated during) examinati'on'or inspectiornandthe parts that are illuminated will be magnified so that ,amore minute inspection maybehadby the physician or surgeonr. Asitiis somtimes desirable to inject air into theacavity I have provided convenient means 2 for performing this func tion and at ithessam'e timearendering'airtight the portion of theainstrument-not within the cavity to prevent loss of air, lessening of pressure, as well as to aroid blowing of the air in the reverse direction whe're-it mayinten fere; withwthe sighhoihthe;operator: This arrangement for renderingthe instrument air-tight alsoiprovides'a portion: of theymeans 1 for projecting the light through [the instrument 'anddoes sowithout liability-of a back- I ward: reflection of thelight rays-into the eyes that is inserted into the cavity; and the intermediate portion thereof-areswiveled to the head OFFbELI'IBl portion so that-the first mentioned parts may be rotated upon rtheiriaxes barrel, or'to benswungto one. side, or,to-be for conveniently usingtheinstrument.

One of "the objects. of the: present invention.

resides in providinga zdiagnostic instrument.

that is simple inconstructiomnovel in the-arrangement :of its parts, effective and depend-. J able in performing the functions'for which itv is designed, and which "may: be readily'takenapart for cleaningorsterilization;

I'preferto carry out m yzinven'tion and to. accomplish the several objects thereof in sub-- stantially th e'rnannei v hereinafter fully de-' scribed and as more particularlypointed out in :the claims, reference "being' made to the.

accompanying drawings that form part hereof. a 1

In the drawings:

my instrument; mounted; upon aas'uitable Figure Ellis a: viewlooltingnat the left-handend shown: in Figure 1.

Figure 1 is aa-longitudi'nal side elevation of Eigurefi isra vertical axialsection'ohtheinstrument, drawn: to a larger scale. with the ends: brokenaway, 1

The accompanying drawings areschema'tic and disclose atypical or preterredembodi mentotmyinvention, and in these drawings I have. employed similar reference. characters I to designate like parts wherever .theyiappear.

The instrument preferably comprises abar' rel a portion 5 ofwhich is cylindrical, while theremaining portion .6. is :semiecylindrical or concavo-convex in section and projects rearwardlyfrom thelower part of the cylindrical portion and is provided with an opening from whicha tubular stub. .7 projectsthat is arranged with its axis. at about five... degrees obliqueto the-vertical for conveniencein use. Thestubis provided with. a'hay onet slot .8-to coactwith apin 9rat theiupper ,end' of the elongated. cylindrical. handle 1Q.to.afiect.the

coactiverelation between these members. The upper-endof thehandle, which. isinsertedin the stubv 7, carries anyangularminiature lamp or,bulb"11 ,that is. adapted to. be. moved 'up or down and intoor ,out ot alinement !W.lt-h

the; axis of ,the'barrel: by-.mea-ns :oi the; slide element 12so. that-the. lamp maynilluminate 1 of the operator, and it1a1s'o' provides-a means for correcting the outenor'mainwlens. The conical lOI' tapered ip'ortion of the instrument the, parts under inspection, I In .the upper segment of cylindrical portion 5 there. is. a small socket13 toreceivethe shouldered end of a .rod 14 while the oppositeend of this rodcarries a lens15 through thelmediuniof the hinge"16,, which permits, the' lens. to be positioned-in "alinement with axis, of said foldedbven flat uporrthe. rod, as will, be understood. e

Theouter end of the cylindrical portion 5 oi the barrel: is provided: with. external threads. '17 to receive. theinternally threaded annulus or ring 18 so thatthe latter may be screwed thereon or thetcon-ical-shaped.end. piece, hereinafter described, .maybe screwed onz-said threads '17, depending.upon the service. desired. A rotatable sleeve 19 has. a

swiveledgconnection at oneend with. the ring 18,- said connection; ,being: formed by provid ingan external flange or bead,20. upon :the

. adjaeentrendof thesleeveandtheinterior of the ring-isiprovided withan-annular shoulder 21- against which the, end ofthe sleeve abuts, and inthei-assembling, of the device, after positioningthe parts in. the,manner just described the edge- 0f the ring; isv turned inwardlyyorspnn over to: provide aninturned flange#;22;.,thus permitting either: the. ring or the sleeve extension to be rotated independently of each other. The end portion of the exterior sleeve 19 is provided with external threads 23, and beyond the threads the sleeve is slightly tapered as shown at 24. The conical terminal piece or head 25 above mentioned. having internal threads 26 at its widest end, may be removably screwed upon the threads 23 of the sleeve extension. The arrangement permits the axial alinement of the cylindrical portion of the barrel, the sleeve, and the terminal piece or head so that when the lamp or bulb 11 is elevated to the proper position the light rays therefrom will pass axially through all of these elements and out through the apex of the terminal piece or head and thus illuminate the area of the cavity under examination and treatment. Also when the head is screwed upon the sleeve the tapered portion 2% will be fitted snugly against the tapered inner surface of the head and provide a tight fit or joint. The fact that the three main members of the instrument are detachable from each other permits an interchangeability thereof, such for example as mounting the conical head directly upon the threads 17 of the barrel, the sleeve 19 being interposed between the head and barrel when it is desired to treat infected parts with medicaments in a gaseous or vaporous form.

Positioned within the sleeve 19, and preferably sealed against the walls thereof is a wall 30 of light-transmitting material. This wall I prefer to make in the form of a lens and arrange the same at an angle of approximately 235 to the vertical or in a plane at an angle of 76.5 at the axis of the sleeve so that there will be no back reflection of the light rays into the eyes of the operator. The transparent wall is maintained in position by means of two counter-part bushings 26 and 27 that are formed by talring a cylinder of thin metal and cutting the same obliquely at the angle desired for the wall 30 and in sorting the same into the sleeve with the transparent wall between the oblique edges. At one end of the sleeve a shoulder 28 is provided against which the adjacent end of bushing 26 abuts. The unct-ure-betwcen the transparent wall 30 and the sleeve 19 is preferably made air-tight so as to prevent air, gas or vapor passing through the sleeve in a direction towards the lamp 11. The means for admitting air, gas or vapor into the sleeve upon the side of the oblique wall 30 opposite the lamp consists of a tubular stub 29 that is screwed into an opening made in the sleeve, thereby providing an inlet port so that when said stub is connected. with a hose the gas or vapor will pass through said port into the sleeve and conical head and will be discharged from the outlet port at the small end of the head 25. The oblique wall, as before suggested, may be in the form of a lens of a minus power so as to afford a means for readily correcting the viewing lens 15 that is positioned between the lamp and the operators eye.

This correcting may be required when the sleeve 19 is interposed in the instrument because of the fact that lens 15 has a focal length equal to the distance from itself to the orifice in the end of the head when the intermediate sleeve 19 is omitted, and of course the insertion of the sleeve lengthens the instrument to a corresponding extent. On account of the tilt of the lens wall 30 it will be of more or less oval contour to properly fit within the sleeve which is circular in cross-section.

What I claim is: r

1. A surgical instrument comprising a hollow body providing a cylindrical sight passageway and providing means for directing the light rays beyond the body, a lamp at one end of said passageway, an air-inlet stub communicating with the interior of said passageway to illuminate an object beyond the passageway, and a light transmitting wall extending across said passageway between said lamp and stub and sealed to the wall of the passageway whereby to permit the discharge of air from the end of the passageway opposite the lamp.

QYA surgical instrument comprising a hollow body providing a cylindrical sight passageway and providing means for directing light rays beyond the body, said body divided transversely into 'a plurality of sections, means for permitting the axial rotation of one of said sections independently of the other section, a lamp at one end of said passageway to illuminate an object beyond the passageway, a light transmitting wall mounted obliquely in the rotatable section of the body, and sealed to the wall of the passageway, and means for admitting air to the passageway upon the side of the wall opposite the lamp.

3. A surgical instrument comprising a barrel, a swivel ring removably mounted thereon. a tubular sleeve rotatably secured at one end to said ring, a conical tip removably mounted upon the opposite end of said sleeve, means for admitting air to the interior of the sleeve, a transparent inclined wall in said sleeve between said means and the swiveled end thereof, and a source of illumination at the end of the instrument opposite the tip and movable transverse to the barrel into and out of the axis of the latter.

4. A surgical instrument comprising a hollow body providing a cylindrical passageway, said body divided transversely into a barrel section, a sleeve section and a head section, a supporting handle connected to said barrel section, a lens movable into and out of axial alinement with said barrel section, a transparent wall sealed to the interior of the sleeve section, and an inlet stub entering said sleeve section upon-the side of the wall opposite said lens.

of the same, a lens movable into and out of axial alinernent with said barrel section, a

transparent Wall sealed to the interior of the 10 sleeve section, and an inlet stub entering said sleeve section upon the side of the Wall opposite said lens. I

Signed at Chicago, in the county of Cook and State of Illinois, this 28th day of De- 15 cember, 1926.

WILL J. CAMERON.

CERTIFICATE OF CORRECTION.

Patent No. 1,693,021. Granted November 27, 1928, to

WILL J. CAMERON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, lines 86 and 87, claim 1, strike out the words "to illuminate an object beyond the passageway" and insert the same after "passageway" in line 84, same claim; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of February, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,693,021. Granted November 27, 1928, to

WILL J. CAMERON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, lines 86 and 87, claim 1, strike out the words "to illuminate an object beyond the passageway" and insert the same after "passageway" in line 84, same claim; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of February, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

